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Objective-C ARC: strong vs retain and weak vs assign
... releases it for you when you are done with it.Using the keyword strong means that you own the object.
Example:
@property (strong, nonatomic) ViewController *viewController;
@synthesize viewController;
2.weak
-
it says "keep this as long as someone else points to it strongly"
the sam...
SQL-Server: Is there a SQL script that I can use to determine the progress of a SQL Server backup or
...sample script here that seems to be working pretty well:
SELECT r.session_id,r.command,CONVERT(NUMERIC(6,2),r.percent_complete)
AS [Percent Complete],CONVERT(VARCHAR(20),DATEADD(ms,r.estimated_completion_time,GetDate()),20) AS [ETA Completion Time],
CONVERT(NUMERIC(10,2),r.total_elapsed_time/1000.0...
C# Sort and OrderBy comparison
...rue);
}
}
class Person
{
public Person(string id, string name)
{
Id = id;
Name = name;
}
public string Id { get; set; }
public string Name { get; set; }
}
static void Main()
{
List<Person>...
How to solve java.lang.NoClassDefFoundError?
...ent (unless classes are loaded with reflection), so usually this exception means that your classpath doesn't include the required classes. Remember that the classloader (specifically java.net.URLClassLoader) will look for classes in package a.b.c in folder a/b/c/ in each entry in your classpath. NoC...
Change default text in input type=“file”?
...lt;label for="files" class="btn">Select Image</label>
<input id="files" style="visibility:hidden;" type="file">
</div>
Below is the code to fetch name of the uploaded file
$("#files").change(function() {
filename = this.files[0].name
console.log(filename);
});
...
How to get key names from JSON using jq
...json
$ cat file.json:
{ "Archiver-Version" : "Plexus Archiver", "Build-Id" : "", "Build-Jdk" : "1.7.0_07", "Build-Number" : "", "Build-Tag" : "", "Built-By" : "cporter", "Created-By" : "Apache Maven", "Implementation-Title" : "northstar", "Implementation-Vendor-Id" : "com.test.testPack", "Implem...
How can I convert byte size into a human-readable format in Java?
...
@Borys Using "KB" to mean "1024 bytes" is wrong. Don't do that.
– endolith
Dec 7 '15 at 16:34
9
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How can I disable a button on a jQuery UI dialog?
...
If you're including the .button() plugin/widget that jQuery UI contains (if you have the full library and are on 1.8+, you have it), you can use it to disable the button and update the state visually, like this:
$(".ui-dialog-buttonpane button:contains('Confirm')")....
What is 'Pattern Matching' in functional languages?
...e it; the creators, like Nil and Cons here, are called constructors. This means that a value of the type List a could have been created with two different constructors—it could have two different shapes. So suppose we want to write a head function to get the first element of the list. In Haskel...
Difference between ActionBarSherlock and ActionBar Compatibility
...ves your application an action bar regardless* of what version of the android API your app is being run on. Action Bar Compatibility gives you the action bar only if the device that you're running on is API level 3.0 or above.
*Note that if the device you're running on isn't 3.0 or above, ActionBar...